Active Control of Flow Separation from Supercritical Airfoil Leading-Edge Flap Shoulder

2005 ◽  
Vol 42 (5) ◽  
pp. 1142-1149 ◽  
Author(s):  
LaTunia Pack Melton ◽  
Norman W. Schaeffler ◽  
Chung-Sheng Yao ◽  
Avi Seifert
Keyword(s):  
Active Control ◽  
Flow Separation ◽  
Leading Edge ◽  
Supercritical Airfoil ◽  
Control Of Flow

Active Control of Flow Separation Over a NACA0024 Airfoil by DBD Plasma Actuator and FBG Sensor

2011 ◽  
Author(s):  
Seth Walker ◽  
Takehiko Segawa ◽  
Timothy Jukes ◽  
Hirohide Furutani ◽  
Norihiko Iki ◽  
...  
Keyword(s):  
Active Control ◽  
Flow Separation ◽  
Leading Edge ◽  
Open Circuit ◽  
Flow Conditions ◽  
Dbd Plasma ◽  
Flow Separation Control ◽  
Barrier Discharge Plasma ◽  
Tunnel Analysis ◽  
Control Of Flow

Dielectric barrier discharge plasma actuators (DBD-PA) and fiber Bragg grating flow sensors (FBG-FS) have been investigated for active control of flow separation around a NACA0024 airfoil. Tangential jets were produced in the vicinity of the DBD-PA slightly aft of the leading edge of the airfoil. The flow separation control ability was evaluated at a low Reynolds number, Re = 5.0×104, in an open-circuit wind tunnel. Analysis of instantaneous and time-averaged velocity distributions around the airfoil was achieved using a particle image velocimetry (PIV) system. The flow conditions induced by the DBD-PA to suppress the flow separation were found for angles of attack of α = 8°, 12°, and 16°. When unaided by the DBD-PA system, flow separations from NACA0024 airfoil are suppressed significantly for certain Reynolds numbers and angles of attack. FBG-FS attached a chord-wise cantilever near the trailing edge of the airfoil was used to measure strain fluctuations for its feasibility to detect flow separation in real time and construct feedback control system with DBD-PA. In this study, it was found that standard deviations of strain fluctuations increase obviously in cases of flow conditions at which the flow around NACA0024 airfoil separates.

Active Control of Flow Separation on a Hemisphere with Plasma Forcing

2011 ◽  
Author(s):  
Haris Catrakis ◽  
Tsolag Apelian ◽  
Oleg Goushcha ◽  
Alejandro Puga ◽  
David Hartwig
Keyword(s):  
Active Control ◽  
Flow Separation ◽  
Control Of Flow

Control of flow separation from leading edge of a shallow rectangular cylinder through momentum injection

1999 ◽  
Vol 83 (1-3) ◽  
pp. 503-514 ◽  
Author(s):  
Yoshinobu Kubo ◽  
Eijirou Yukoku ◽  
Vinod J. Modi ◽  
Eiki Yamaguchi ◽  
Kusuo Kato ◽  
...  
Keyword(s):  
Flow Separation ◽  
Leading Edge ◽  
Rectangular Cylinder ◽  
Control Of Flow

Active control of flow separation and structural vibrations of wind turbine blades

Wind Energy ◽  
2010 ◽  
Vol 13 (2-3) ◽  
pp. 221-237 ◽  
Author(s):  
Victor Maldonado ◽  
John Farnsworth ◽  
William Gressick ◽  
Michael Amitay
Keyword(s):  
Wind Turbine ◽  
Active Control ◽  
Flow Separation ◽  
Turbine Blades ◽  
Wind Turbine Blades ◽  
Structural Vibrations ◽  
Control Of Flow

Active Control of Flow Separation on a Laminar Airfoil

AIAA Journal ◽  
2013 ◽  
Vol 51 (5) ◽  
pp. 1032-1041 ◽  
Author(s):  
Nathan O. Packard ◽  
Michael P. Thake ◽  
Carlos H. Bonilla ◽  
Kyle Gompertz ◽  
Jeffrey P. Bons
Keyword(s):  
Active Control ◽  
Flow Separation ◽  
Control Of Flow
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